20638720
20,638,720 is an even composite number composed of four prime numbers multiplied together.
20638720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of eighty-eight divisors.
Prime factorization of 20638720:
210 × 5 × 29 × 139
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 29 × 139)See below for interesting mathematical facts about the number 20638720 from the Numbermatics database.
Names of 20638720
- Cardinal: 20638720 can be written as Twenty million, six hundred thirty-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.063872 × 107
Factors of 20638720
Divisors of 20638720
- Number of divisors d(n): 88
-
Complete list of divisors:
1 2 4 5 8 10 16 20 29 32 40 58 64 80 116 128 139 145 160 232 256 278 290 320 464 512 556 580 640 695 928 1024 1112 1160 1280 1390 1856 2224 2320 2560 2780 3712 4031 4448 4640 5120 5560 7424 8062 8896 9280 11120 14848 16124 17792 18560 20155 22240 29696 32248 35584 37120 40310 44480 64496 71168 74240 80620 88960 128992 142336 148480 161240 177920 257984 322480 355840 515968 644960 711680 1031936 1289920 2063872 2579840 4127744 5159680 10319360 20638720
- Sum of all divisors σ(n): 51584400
- Sum of proper divisors (its aliquot sum) s(n): 30945680
- 20638720 is an abundant number, because the sum of its proper divisors (30945680) is greater than itself. Its abundance is 10306960
Bases of 20638720
- Binary: 10011101011101100000000002
- Hexadecimal: 0x13AEC00
- Base-36: CACXS
Squares and roots of 20638720
- 20638720 squared (206387202) is 425956763238400
- 20638720 cubed (206387203) is 8791202368583630848000
-
The
square root of 20638720 is 4542.9858023111 -
The
cube root of 20638720 is 274.3011234729
Scales and comparisons
How big is 20638720?- 20,638,720 seconds is equal to 34 weeks, 20 hours, 58 minutes, 40 seconds.
-
To count from 1 to 20,638,720 would take you about fifty-one weeks!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 20638720 cubic inches would be around 22.9 feet tall.
Recreational maths with 20638720
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The information we have on file for 20638720 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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